khoury



M. G. KHOURY.

MOLDING AND SWAGING DEVICE. APPLICATION nub AUG-l0, l9l6- 1,308,758 Patented July 8,1919.

2 SHEETSSHEET I.

Inuenf'or.

M. Ga KHOURY.

- MU'ITDING AND SWAGING DEVICE.

APPLICATION FILED AUG-l0, i916.

Patented July 8, 1919. 2 SHEETS-SHEET 2 ,iqie

INVENTOR Mica-EL Glfii'o URY. BY h:

ATTORNEY THE CDLUMBU; PLANOGRAPII CO WASHINGTON. D4 C.

MICHEL Gr. KHOURY, OF RIO DE .ANEIRO, BRAZIL.

MOLDING SWAGIN G DEVICE.

Specificationof Letters Patent;

Patented July 8, 1919.

Application filed August 10, 1916. Serial No. 114,217.

To all whom it may concern:

' Be-it known that I, MICHEL G. KHOURY, dentist, a citizen of Brazil, South America, residing at'R-io de' J aneiro, Brazil, have invented certain new and useful Improvements in Molding and Swaging Devices, of which the following is a specification.

This invention relates to a device which may be used in conjunctionwith dies, as a awage, and which may also be used to cast Other objects will be apparent from the following description taken in connection withthe accompanying drawings in which:

Figure 1 is an elevation, partly in section, of a preferred embodiment of the invention;

Fig. 2 is an elevation of the plunger;

Fig. 3 is a sectional elevation of the upper part of the casing;

Fig. 4 is a sectional elevation of the ring surrounding the casing;

Fig. 5 is a sectional elevation of the lower part of the casing;

Fig. 6 is a sectional elevation showing the lower part ofthecasing ready for use in casting the upper die or mold; Fig. 7 is an elevation of the casing, partly in section,

showing the process of casting the upper die; Fig. 8 isa sectional elevation showing the upper part of the casing ready for use in casting the lower die; Fig. 9 is an elevation,

I; partly in section, of the'casing showing the process of casting the lower' die; and Fig. 10 is a sectional elevation showing the entire devicezduring the swaging operation.

. In the" drawingthe swage casing comprises two parts 1 and 3 adapted to fit closely on each other and provided with correspondingly cup-shaped cavities indicated by 1 and 3 respectively. Openings 1 and 3 are provided inthe bottom walls of the cavities 1*, 3 respectively. The openin 3 affords communication through the ottom wall or partition 3 between the cavity 3 and-a cylindrical recess 3 limited byan upstanding flange 3" integral with the upper part 3 of the casing. Surrounding the cas I ing is wring 2 which fits between peripheral shoulders 1 and 3 on the parts 1 and 3 respectively and covers thevjoint therebetween when these parts are assembled for use.

A- substantiallycylindrical'cover or plun-- ger 4 fits into the recess 3 and has a periphv eral shoulder 4 adapted to abut against the The parts 1, 2 and 3 are preferably cylindrical in cross-section and suitable means may be provided to prevent theirrelative angular displacement. Thus, in the embodiment illustrated in the drawings, the part 1 has an upwardly projecting pin 1 rigidly connected therewith while the ring 2 and part3 have hemicylindrical recesses 2 and 3 adapted to beengagedlby said. pin. Obviously other equivalent means can be employed for the same purpose.

1 The swage casing is herein shown as being supported by a base B having a peripheral flange F, but any other suitable or available support such as a table, a plate or the like, may be used instead of the base B.

In operation, when it is desired to cast the dies for shaping an article of sheet metal such as a dental plate, a mass T of plastic material, for example modeling compound, glaz'iers putty or the like, is introduced into the casing part 1, and a gypsum cast 'U of the mouth cavity is placed in the desired po sition on the plastic mass, as indicated in Fig. 6. The ring 2 and part 3 are then fitted on the part 1 and the upper die may be cast by pouring through opening 3" (Fig. 7) a metal or alloy having a low melting point, for example tin or an amalgam of tin and antimony or lead and antimony, until the cavity 3 is entirely filled and the metal that is to form the upper die X reaches the upper surface of the annular partition 3. When the metal hasset, the parts 1, 2 and 3 are inverted, the parts 1 and 2 are removed and the gypsum cast and its supporting material are withdrawn therefrom. Part 3, then in the position shown in Fig. 8,'is ready to receive the ring 2 and part 1 which will serve as a flask for casting the lower die. After having provided the exposed surface of the upper die X with a coating of graphite for preventing freshly poured metal from adhering thereto, the ring 2 is fitted on the part 3 and the part 1 is again placed within the ring 2. The lower die Y is then cast by pouring molten metal throu h the opening l into the cavity 1 (Fig. 95 until the surface of the metal reaches the outer edge of the opening 1. Thus the lower die is shaped by the upper die, after the latter has been made directly by means of the gypsumcast.

" To shape the dental plate a metal sheet Z of suitable size is placed on the lower and the part 3 with the upper die supported therein is placed on the part 1 (Fig. 10). The plunger l is then introduced into the recess 3* and pressure is exerted thereon,

either in a continuous manner orby a succession of blows, until the shoulder 3 comes into contact with the upper surface of the ring 2. The parts of the swage can then readily be taken apart and the plate having the desired shape is ready for use.

It'will'be obvious that various changes may be made in the construction of the swage hereinbefore described without departing from the spirit of the invention as set forth in the appended claims.

I claim:

1. A device of the class described comprising a two-part casing, each part having a cavity, in which the dies may be cast and which are adapted to contain the dies when the device is used as a swage, and an opening in'the bottom wall of said cavity, a ring adapted to engage the said casing parts and cover the joint therebetween, and a plunger adapted to engage one of said casing parts to transmit motion thereto and cover the opening therein.

2. A device of the class described comprising a two-part casing, the casing parts having registering cavities, in which the dies may be cast and which are adapted to contain the dies whenthe device is used as a swage, and openings in the bottom walls of said cavities, one of said casing parts having an upstanding flange on the side of its opening remote from its cavity, a ringadapted to engage the said casing parts and cover the joint therebetween, and a plunger adapted to engage said flange to transmit motion to the casing part and cover the opening adjacent thereto.

3. A device of the class described comprising a two-part casing, the casing parts having registering cavities, in which the dies may be cast and which are adapted to contain the dies when the device'is used as a swage, and openings in the bottom walls of said cavities, one of said casing parts having an upstanding flange on the side of its opening remote from its cavity, a peripheral shoulder on each casing part, a ring surrounding the joint between said casing parts and adapted to be clamped between said shoulders, and a plunger adapted to engage said flange to transmit motion to the casing part and cover the opening adjacent thereto.

' i. A device of the class described comprising a cup-shaped casing member having an opening in the bottom wall thereof,

a second casing member having a cup shaped portion adapted to rest on the firstmentioned member, a substantially cylindrical hollow portion and a partition between the two portions, said partition forming the bottom wall of said cup-shaped portion and having an opening connecting the two portions, cooperating dies carried by the first mentioned cup-shaped casing member and by the cup-shaped portion of the second mentioned casing member, peripheral shoulders on said casing members, a ring surrounding the oint between said members and adapted to be clamped between said shoulders, and a plunger adapted to reciprocate in said cylindrical hollow portion and to engage said partition to transmit motion to said casing member.

5. A device of the class described comprising a two-part casing, each part hav-' ing a cavity in which the dies may be cast and which are adapted to contain the dies when the device is used as aswage and an opening in the bottom wall of said cavity, a ring adapted to engage the said casing parts and cover the j oint therebetween, means for preventing a relative angular displacement of said ring and casing parts, and a plunger adapted to engage one of said casing parts to transmit motion thereto and cover the opening therein.

6. A device of the class described comprising a cup-shaped casing member'having an opening in the bottom wall thereof, a second casing member having a cup-shaped portion adapted to rest on the first-mentioned member, a substantially cylindrical.

hollow portion and a partition between the two portions, said'partition forming the bottom wallof said cup-shaped portion and having an opening connecting the two portions, cooperating dies carried by the first mentioned cup-shaped casing member and by the cup-shaped portion of the second mentioned casing member, peripheral shoulders on said casing members, a ring surrounding the joint between said members and adapted to be clamped between said shoulders, means for preventing a relative angular displacement of said ring and casing parts, and a plunger adapted to reciprocate in said cylindrical hollow portion, said plunger having a peripheral shoulder adapted to bear against the outer edge of said portion when the bottom face of said plunger rests on said partition.

In testimony whereof I afiiX my signature.

MICHEL'G. KHOURY.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of latents. Washington, I), G. 

